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Subject[PATCH 7/7] serial: 8250_dw: allow enable rs485 at boot time
Date
From: Giulio Benetti <giulio.benetti@micronovasrl.com>

If "linux,rs485-enabled-at-boot-time" is specified need to setup 485
in probe function.

Call uart_get_rs485_mode() to get rs485 configuration, then call
rs485_config() callback directly to setup port as rs485.

Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
---
drivers/tty/serial/8250/8250_dw.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 7023b656658d..c771faeaa260 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -550,8 +550,10 @@ static int dw8250_probe(struct platform_device *pdev)
if (data->uart_16550_compatible)
p->handle_irq = NULL;

- if (!data->skip_autocfg)
+ if (!data->skip_autocfg) {
dw8250_setup_port(p);
+ uart_get_rs485_mode(dev, &p->rs485);
+ }

/* If we have a valid fifosize, try hooking up DMA */
if (p->fifosize) {
--
2.24.1
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